I think you can just do this:
if (point.within(polygon)) {
// yes, within
}
Point and Polygon are both children of the Geometry class which contains
methods for intersects, contains, within, distance of, etc...
Steve
Adrian Custer said the following on 7/24/2008 5:46 AM:
> JTS uses the half-line intersection method:
> com.vividsolutions.jts.algorithm.RayCrossingCounter
>
> --adrian
>
>
> On Thu, 2008-07-24 at 10:30 +0100, Christian Weaves wrote:
>
>> Hi there, a noobie question if you don't mind, I have spent some time
>> reading the faq's but couldn't find the answer...
>>
>> Say I have a polygon and a point, is there a way of determining if the
>> point falls within the bounds of the polygon boundaries?
>>
>> Thank you v.much!
>>
>> Here's what I have so far:
>>
>> GeometryFactory geomFac = new GeometryFactory();
>>
>> //create polygon
>> Coordinate[] polygonCoordinates = new Coordinate[10];
>> polygonCoordinates[0] = new Coordinate(7,7);
>> polygonCoordinates[1] = new Coordinate(6,9);
>> polygonCoordinates[2] = new Coordinate(6,11);
>> polygonCoordinates[3] = new Coordinate(7,12);
>> polygonCoordinates[7] = new Coordinate(13,9);
>> polygonCoordinates[8] = new Coordinate(11,7);
>> polygonCoordinates[9] = new Coordinate(7,7);
>>
>> LinearRing ring = geomFac.createLinearRing(polygonCoordinates);
>> Polygon polygon = geomFac.createPolygon(ring,null);
>>
>>
>> //create point
>> Coordinate c = new Coordinate(14.0d,14.0d);
>> Point point = geomFac.createPoint(c);
>>
>> //code to check if point falls within polygon!?
>>
>>
>>
>>
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